Open AccessModelling & Position Control for Electro-Hydraulic System
Author(s) -
Manraj Singh,
Mukul Gupta
Publication year - 2019
Publication title -
international journal of recent technology and engineering
Language(s) - English
Resource type - Journals
ISSN - 2277-3878
DOI - 10.35940/ijrte.d8217.118419
Subject(s) - control theory (sociology) , nonlinear system , position (finance) , controller (irrigation) , control system , hydraulic machinery , lyapunov function , lyapunov stability , control engineering , computer science , process (computing) , control (management) , engineering , mechanical engineering , physics , electrical engineering , finance , quantum mechanics , artificial intelligence , agronomy , economics , biology , operating system
Electro-hydraulic systems (EHS) are widely used in industrial applications due to the high-power density and accuracy. However, EHS are highly nonlinear which makes its modelling and control aspects a complex process. In this paper, we present the modelling and position control for an electro-hydraulic system (EHS). The mathematical modelling is carried out considering the non-linearities like friction, discharge coefficient and load mass present in the system. A back-stepping control scheme is developed for maintaining the accuracy in the position control. The closed-loop stability of the proposed control system is analyzed with Lyapunov’s theory. The performance of the control system under the effect of bounded external uncertainties is validated with simulation study. The study indicates that the proposed controller gives an effective motion control in presence of the system uncertainties.